Import patches-unapplied version 3.6.1-8ubuntu1 to ubuntu/bionic-proposed

Imported using git-ubuntu import.

Changelog parent: 788ec64099e8279e305dcc209d252bb2e25e685e

New changelog entries:
* Sync with Debian. Remaining changes:
- Add 03_fix_ltsp-fading.patch: don't fade on LTSP
- Add 05_dbus_service.patch:
+ restore the dbus service that upstream dropped
- Add 13_nvidia_gamma_fade_fallback.patch:
+ Fall back to XF86VM gamma fade if XRANDR gamma fade is not supported
- Add 14_no_fade_on_user_switch.patch:
+ Disable fade on locking to work around #546578 and prevent the screen
remaining blank after user switching.
- Add 15_dont_crash_on_no_fade.patch:
+ Don't crash on systems that don't support XF86VM or XRANDR gamma fade,
by testing if fade is supported on a particular screen before calling
the fade_setup and fade_finish virtual functions
- Add 16_dont_crash_in_kvm.patch:
+ Don't crash when the XF86VM extension doesn't allow the gamma to be set
- Add 17_remove_top_panel.patch: Don't create the top panel.
- Add 18_revert_dialog_layout.patch: Revert lock dialog to
previous appearance to get username back.
- Add 24_use_user_settings.patch: use the user settings, and
not the default system ones, so we get the user's background when the
screen is locked.
- Add 25_fix_lock_command.patch: make --lock expect a reply
so the screen gets properly locked when gnome-screensaver needs to be
respawned by dbus. This was preventing ctrl-alt-l from locking the
screen on the first attempt when the gnome-screensaver process was
dead.
- Add 27_lightdm_switch_user.patch: When used under lightdm,
use dbus to switch to greeter instead of calling gdmflexiserver.
- Add 28_blocking_return.patch:
+ Correctly reply so the client doesn't block waiting
- Add 28_handle_expired_creds.patch:
+ Allow handling of expired credentials.
- Add 30_ubuntu-lock-on-suspend_gsetting.patch: Handle
ubuntu-lock-on-suspend gsettings key. This is introduced in Ubuntu's
gsettings-desktop-schemas package.
- Add 32_input_sources_switcher.patch:
+ Use input sources instead of XKB layouts.
- Add 33_budgie_support.patch:
+ enable support for gnome-control-center
+ style the lock-screen using the "Unity" patch-work
- Add move_not_nuke.patch: When trying to acquire a contentious
keyboard grab, don't nuke input focus, but instead move it to new grab
window before taking grab
- Add allow-replacement: Make the D-Bus interface able to be
replaced, so that Unity (or others in future) can take it over if they
want to provide their own screensaver implementations. No need to listen
to NameOwnerChanged, only NameLost — so we don't have to wake
gnome-screensaver up every time this signal goes across the bus.

New changelog entries:
* Team upload.
[ Faidon Liambotis ]
* Re-enable support for locking the screen on suspend (closes: #773026).
- Build with systemd support by passing --with-systemd=auto to configure
and build-depending on libsystemd-login-dev. Use "auto" and a
[linux-any] dependency to keep compatibility with non-Linux systems.
- 00git_logind_check.patch from Ubuntu/upstream, to make this dependent on
just logind, not systemd-as-pid1, as recommended by systemd upstream &
Debian systemd maintainers. Drops libsystemd-daemon-dev build-dep.
- 31_lock_screen_on_suspend.patch from Ubuntu, to listen for logind's
PrepareForSleep signal, similarly to gnome-shell's behavior.
- 14_no_fade_on_user_switch.patch from Ubuntu, as to not fade on screen
lock. Prevents leaking of the screen contents on resume from suspend.

New changelog entries:
* Team upload
* Add missing permissive license to debian/copyright (Closes: #749519)
* Add a missing copyright holder while I'm there
* Add patch from upstream to enable gnome-screensaver to be included
in the autostart list for non-GNOME sessions, by requiring session files
to include it in RequiredComponents if desired and removing its
AutostartCondition (Closes: #733059)
- depend on dh-autoreconf and gnome-common so we can autoreconfiscate
- remove fallback -> flashback patch, no longer relevant
- Breaks versions of gnome-session-flashback that do not explicitly pull
it in